An abrasive material called emery is made up of corundum, which is a naturally occurring form of aluminum oxide. Corundum is a very hard mineral that is commonly used in abrasives for grinding, cutting, and polishing applications due to its durability and hardness.
Rubies are a variety of corundum, the mineral name for aluminum oxide, Al2O3. The red color comes from trace amounts of chromium.
Corundum.
Rubies are made of the mineral corundum, which is composed of aluminum oxide with the element chromium giving the gemstone its red color. The intensity and shade of red in rubies can vary based on the amount of chromium present in the crystal structure. Inclusions of other minerals or elements can also affect the ruby's appearance and value.
Corundum is in the trigonal crystal system.
Diamond is the hardest mineral and is the only one that can scratch corundum. but in my opinion corundum will scratch corundum any mineral of the same hardness will scratch the other !
Corundum is a crystalline form. This crystalline form is made up of aluminium oxide.
100% of rubies are corundum. "Ruby" is a name made up by the gem trade for the mineral known as corundum, when it is red.
Rubies are part of the corundum mineral group.
when you heat an object up what happene to the atomsmolecules that it is made of?
Corundum.
Rubies are a variety of corundum, the mineral name for aluminum oxide, Al2O3. The red color comes from trace amounts of chromium.
Sapphire is made of the mineral corundum (aluminum oxide) with impurities to give it color.
Corundum occurs naturally in the form of ruby and sapphire. It is a precious element and has been mined around the world to be made into jewelry and ornamental pieces.
Corundum ( (Al_2O_3) ) is hexagonal in crystal structure.
Sapphires are composed of the mineral corundum and impurities that gave it its color.
Rubies are made of the mineral corundum, which is composed of aluminum oxide with the element chromium giving the gemstone its red color. The intensity and shade of red in rubies can vary based on the amount of chromium present in the crystal structure. Inclusions of other minerals or elements can also affect the ruby's appearance and value.
Corundum is in the trigonal crystal system.